US Patent 11088919 Data structure for defining multi-site logical network

Some embodiments provide a method for managing a logical network that spans multiple physical sites. The method creates a global tree data structure for defining the logical network. The method adds at least two physical sites to the global tree data structure. The physical sites added to the global tree structure are eligible to be spanned by the logical network. The method adds multiple logical network elements to the global tree data structure. At least a subset of the logical network elements reference the physical sites in the global tree data structure in order to span to the physical sites.